. >>> recent polls show that gop candidate mitt romney is trailing president obama by 3% to 7%. another pivotal state, iowa drawing attention today. because it's the first of a so-called battleground states to begin early voting. strategies and researchers project that more than one in three voters will cast their ballots before election day. election officials confirmed the request for absentee ballots in some areas are already up 30% over 2008. >>> he illustrated cartoon bombs, a bright red line and a warning to the world. a warning about iran. today israeli prime minister benjamin netanyahu described his fears about iran producing a nuclear bomb. now, the international community is reacting. danielle lee has our story. >>> from a fight over the west bank to fears about a nuclear program. benjamin netanyahu spoke at the united nations. >> a great battle is being raged. >> reporter: just one day after mahmoud ahmadinejad accused the u.s. and the west of intimidation. >> a red line should be drawn right here before iran completes a second stage of nuclear enrichment necessary to